There are not many hobbies these days that you can say can literally save you money or your life but if you know how to sew then both of those are true. If you are new to sewing it is not a hard skill to learn and will serve you for years to come if you take the time to learn it right the first time.
One of the first things to do when you are starting out is of course to buy a sewing machine. If you are not quite sure which sewing machine is the best sewing machine for beginners you can always look through some reviews or ask around to the different universities or your family members to get a good idea. The key point is that your first sewing machine does not need to cost an arm and a leg you can get one that will do the job for usually around a hundred bucks.